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Low-frequency acoustic absorption of localized resonances: Experiment and theory
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10.1063/1.3284943
/content/aip/journal/jap/107/2/10.1063/1.3284943
http://aip.metastore.ingenta.com/content/aip/journal/jap/107/2/10.1063/1.3284943

Figures

Image of FIG. 1.
FIG. 1.

Cross sections of the array of coated steel spheres embedded in a viscoelastic polymer matrix.

Image of FIG. 2.
FIG. 2.

Schematic diagram of the two-microphone tube apparatus.

Image of FIG. 3.
FIG. 3.

Comparison of the theoretical and experimental absorptances of the two pure polymer samples. The dashed and dashed dotted lines present the experiment results for sample 1 and R1, respectively. The solid line plots the computational result.

Image of FIG. 4.
FIG. 4.

Comparison of the theoretical and experimental absorptances of the second group of samples with steel core. The dashed and dashed dotted lines present the experiment results for sample 2 and R2, respectively. The solid line shows the computational absorptance.

Image of FIG. 5.
FIG. 5.

Comparison of the theoretical and experimental absorptances of the third group of samples with Al core. The dashed and dashed dotted lines present the experiment results for sample 3 and R3, respectively. The solid line shows the computational absorptance.

Image of FIG. 6.
FIG. 6.

The absolute values of matrix elements for a coated steel sphere in unbounded polymer under longitudinal (a) and transverse (b) incidence. (a) The solid and dashed dotted lines show the absolute values of and , respectively. (b) The solid and dashed dotted lines show the absolute values of and , respectively.

Image of FIG. 7.
FIG. 7.

Absorptance for a longitudinal acoustic wave incident normally on a viscoelastic polymer slab of N layers of steel-core LRSs. planes are denoted by dash, solid, and dashed dotted lines, respectively.

Tables

Generic image for table
Table I.

Physical parameters of materials used in present paper.

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/content/aip/journal/jap/107/2/10.1063/1.3284943
2010-01-27
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Low-frequency acoustic absorption of localized resonances: Experiment and theory
http://aip.metastore.ingenta.com/content/aip/journal/jap/107/2/10.1063/1.3284943
10.1063/1.3284943
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